well, I went with the 32 H&R for my wife.
The recoil is very light, at least in my sp101, havent shot the 432 yet, but can bet its much better than my 38s even out of the light little revolver.
I just picked up a 327mag for the MIL, reason being she can shoot all the 32s and still have the 327 IF she can handle it.
Personally I like the 32 so much Im looking for another one for myself to replace my sp101.
The 32 isnt a bear stopper, but it will get the job done, very very underrated round.
This seems to be a common question, It pretty much comes down to how much she can control, NOT handle. by that I mean if one cant control the recoil enough to put the sights back on/another round in the target in a rather quick fashion then its too much gun, but on a side note this can be resolved by practice and training on technique.
example would be say a hot loaded 44mag, itll most likely knock a bad guy into the next time zone, I am sure I can handle the recoil just fine,but if I miss, how fast can you get the gun back on target.
Get her out shooting to see what she can do first, then go from there, lots of classes where the instructors furnish their own guns for the students to shoot, you just have to bring the ammo. Id look into it, Ive taken a few with my wife, it was fun and good info to learn.
Good luck